CVE-2025-70099

CVSS 7.5 HIGHEPSS 0.4%CWE-476

Vexday Risk Score

21Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 7.5EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

01 jun 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

A NULL pointer dereference in the ext4_dir_en_get_name_len function in include/ext4_dir.h of lwext4 1.0.0 allows attackers to cause a denial of service by supplying a specially crafted EXT4 filesystem image with malformed directory entries. During directory iteration, the code may fail to validate the directory entry pointer before accessing the name_len field, resulting in a segmentation fault. This affects versions based on (or equivalent to) the 2016-era codebase (1.0.0).

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Productos afectados

n/a · n/a

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Referencias

https://github.com/gkostka/lwext4/issues/89 https://github.com/sigdevel/pocs/blob/main/res/lwext4/1/sig11_2_1_lwext4_ext4_dir_h_126 https://infosec.exchange/@sigdevel/116668939725424227 http://www.openwall.com/lists/oss-security/2026/06/29/4